CN107702836A - A kind of accurate thread trim ring moment of torsion pretightning force mapping relations measurement apparatus - Google Patents
A kind of accurate thread trim ring moment of torsion pretightning force mapping relations measurement apparatus Download PDFInfo
- Publication number
- CN107702836A CN107702836A CN201610797982.0A CN201610797982A CN107702836A CN 107702836 A CN107702836 A CN 107702836A CN 201610797982 A CN201610797982 A CN 201610797982A CN 107702836 A CN107702836 A CN 107702836A
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- China
- Prior art keywords
- sphere
- pretightning force
- connection component
- threaded ring
- torsion
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
- G01L5/243—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed using washers
Abstract
The invention discloses a kind of measurement apparatus of accurate thread trim ring moment of torsion pretightning force relation, S type high-precision sensors lower end is fixed on the base, and upper end is fixedly connected with sphere-contact connection component lower end；The sphere-contact connection component upper end is provided with spherical plate, and the spherical plate is connected with the simulation eyeglass；The sphere-contact connection component is used to limit the pretightning force being applied on the simulation eyeglass, the pretightning force is acted perpendicularly to the S types high-precision sensor；Linear limit assembly is fixedly connected on base, and linear limit assembly is fixedly connected by bearing with sphere-contact connection component, and the linear limit assembly is used for the rotation for limiting sphere-contact connection component；Replaceable threaded ring nut assembly coordinates with the linear limit assembly to be fixed, for the threaded ring to be fixed on above the simulation eyeglass.The device is easy to operate, and precision is high.
Description
Technical field
The invention belongs to field of precision instruments, and in particular to a kind of accurate threaded ring moment of torsion-pretightning force mapping relations
Measurement apparatus.
Background technology
As Aeronautics and Astronautics, military affairs, the requirement medically to the precision and stability of precision instrument are continuously increased, improve
The task of the precision and stability of precision instrument is extremely urgent.Threaded ring is because its is considerable in precision optical instrument
The characteristics of attachment force and easy disassembly, it is widely used in the fixation of optical mirror slip.Accurate moment of torsion-the pretension for obtaining threaded ring
Power mapping relations are significant for the precision and optical axis stable for improving precision optical instrument.
Threaded ring is the part for being used to be fixed optical mirror slip in precision optical instrument.Different from screw, screw thread
Trim ring not only have flank with lens barrel between contact, its seamed edge also has a contact with optical mirror slip curved surface, therefore it contacts shape
Formula is different from screw.Because threaded ring and eyeglass inevitably have form error, when threaded ring produces to optical mirror slip
When raw pressure is that pretightning force is excessive, the uneven deformation of optical mirror slip and stress raisers can be caused, are greatly influenceed
The precision and optical axis stable of optical mirror slip.When pretightning force is too small, though will not cause the deformation of eyeglass, threaded ring is to light
Learning eyeglass can not effectively be fixed, and cause the loosening of eyeglass, the precision and stability to precision optical instrument cause greatly
Influence.
There is no the pretension force control method for threaded ring in production practices at present, mainly apply the approximate control of calibrated wrench method
Pretightning force processed, the general principle of this method are the indirect controls in rundown process by controlling screw-down torque to realize to pretightning force
System.
T=KdF
Wherein, T：Moment of torsion；K：Torque coefficient；d：Screw thread nominal diameter；F：Threaded connector axial pre tightening force.
At present, torque coefficient K general Main Basiss experiences determine in engineering.But empirical value is used to screw or similar spiral shell
The thread connecting mode of nail, it is clear that be not fully applicable for threaded ring.And in actual rundown process, threaded ring
Torque coefficient K is not a constant, the machining accuracy of screw thread, whether there is lubricant, tightens speed, tightening tool, when tightening
Temperature etc. can all have an impact to the change of torque coefficient K in rundown process.As can be seen here, for precision optical instrument, screw thread
The pretightning force of trim ring needs accurate control, under conditions of a variety of uncertain factors such as material, temperature, lubricating condition, K experience
Value obviously can not meet engineering actual demand.It is therefore proposed that the value rule of the torque coefficient K values for accurate thread trim ring,
The mapping relations established between threaded ring moment of torsion and pretightning force, for quantifying, controlling screw thread in precision optical instrument exactly
The screw-down torque of trim ring is significant.
The contact condition in rundown process and occupation mode of threaded ring are all different from screw, and threaded ring
Pretightning force does not cause extensive attention yet.Therefore at present not for threaded ring moment of torsion-pretightning force mapping relations
Measuring method, the therewith more ripe measurement side of moment of torsion and pretightning force relation in the similar connection for BIG SIZE BOLTS
Method, mainly there are strain gauge method, ultrasonic Method for Measuring, turn round pull sensor measuring method etc..But these methods can not be applied to
The moment of torsion of threaded ring-pretightning force mapping relations measurement, wherein, although the measuring method theoretical precision comparison of strain gauge method is high,
But due to complex operation, the sticking Quality of foil gauge influences ultimate measurement accuracy, is primarily adapted for use in laboratory in this way
Experimental study, it is not appropriate for engineer applied.Supercritical ultrasonics technology measurement accuracy is high, but shortcoming is to testing the structure of bolt and being machined with
It is specific to require, it is clear that not to be suitable for threaded ring.Biography is drawn in the bolted torsion for being currently based on the big machinery product such as ship, car
Sensor measurement apparatus is also not particularly suited for the measurement of threaded ring.
In order to ensure pretightning force of the threaded ring in rundown process in precision optical instrument, and high accuracy and height can be obtained
The measured value of standard, need the moment of torsion-pretightning force mapping relations measurement apparatus for studying threaded ring in a kind of precision optical instrument badly
And its measuring method.
The content of the invention
In view of this, the invention provides a kind of accurate thread trim ring moment of torsion-pretightning force mapping relations measurement apparatus, the dress
Put easy to operate, precision height.
In order to achieve the above object, the technical scheme is that：A kind of accurate thread trim ring moment of torsion-pretightning force relation
Measurement apparatus, including：Torsion measuring instrument, S types high-precision sensor, simulation eyeglass, replaceable threaded ring nut assembly, sphere
Contact connection component, linear limit assembly, base and threaded ring.
S type high-precision sensors lower end is fixed on base, and upper end is fixedly connected with sphere-contact connection component lower end.
Sphere-contact connection component upper end is provided with spherical plate, and the spherical plate is connected with simulation eyeglass；Sphere-contact connection group
Part is used to limit the pretightning force being applied on simulation eyeglass, the pretightning force is acted perpendicularly to S type high-precision sensors.
Linear limit assembly is fixedly connected on base, and linear limit assembly is connected group by bearing with sphere-contact
Part is fixedly connected, and linear limit assembly is used for the rotation for limiting sphere-contact connection component.
Replaceable threaded ring nut assembly coordinates with linear limit assembly to be fixed, for threaded ring to be fixed on into mould
Intend above eyeglass.
Further, sphere-contact connection component includes upper spherical plate, lower peripheral surface plate and U-shaped board.
The bottom of U-shaped board is fixedly connected with S type high-precision sensors.
Lower peripheral surface plate is the flat board that upper surface opens up spherical groove, and lower peripheral surface plate is fixed on the upper end of U-shaped board.
Upper spherical plate is the flat board that lower surface is provided with spherical surface hill, the spherical surface hill in upper spherical plate with lower peripheral surface plate
Spherical groove matches and contacts connection；Upper spherical plate upper end connection simulation eyeglass.
Further, linear limit assembly includes optical axis, rhombus shaft stool and box linear bearing.Totally four, optical axis,
It is fixed on by four rhombus shaft stools on base, wherein four optical axises are set around sphere-contact connection component.Box straight line
Totally four, bearing, each box linear bearing pass through an optical axis, four box linear bearings with sphere-contact connection component
U-shaped board be fixedly connected.
Further, replaceable threaded ring nut assembly includes supporting plate and threaded ring nut, supporting plate are fixed on
On the optical axis of linear limit assembly, threaded ring is fixed on the supporting plate by threaded ring nut.
Beneficial effect：
1. the present invention is by the design of accurate thread trim ring moment of torsion-pretightning force mapping relations measurement apparatus and method, by spiral shell
The pretightning force of line trim ring is converted into S type high-precision sensings by replaceable threaded ring nut assembly and sphere-contact connection component
Device can pressure measured directly, this conversion process is concisely clear, easy to operate, can realize under different operating modes high accuracy torsion
The measurement of square-pretightning force mapping relations.By compact concise design, by moment of torsion during bolt connection and pretightning force (pressure) point
Untie measurement.The real-time monitoring of the moment of torsion, pretightning force (pressure) in threaded ring rundown process can be realized, and can is united
Count, to analyze the moment of torsion of the threaded ring under certain specific condition of experiment-pretightning force mapping relations, and then Instructing manufacture
Practice.
2. the present invention has the function of high-precision analog threaded ring connection actual condition, measurement apparatus can not only facilitate
Carry out different size, temperature, lubricating condition, tightening way situations such as threaded ring moment of torsion and pretightning force measurement, moreover it is possible to
Enough realize the measurement of different materials threaded ring moment of torsion and pretightning force.
3. the sphere-contact connection component of apparatus of the present invention, which has efficiently controlled, surveys the uniform and vertical application of pretightning force
On S type high-precision sensors, tangential force and threaded ring spiral shell caused by threaded ring and measurement apparatus error are avoided
It is female install with S types high-precision sensor it is not coaxial caused by measurement error.
Brief description of the drawings
Fig. 1 is the system distribution schematic diagram of accurate thread trim ring moment of torsion-pretightning force mapping relations measurement apparatus.
Fig. 2 is the system partial schematic diagram of accurate thread trim ring moment of torsion-pretightning force mapping relations measurement apparatus.
Fig. 3 is sphere-contact connecting component structure schematic diagram.
Wherein, 1- supporting plates, 2- box linear bearings, 3- optical axises, 4- rhombus shaft stools, 5- bases, 6- threaded rings, 7-
Threaded ring nut, 8-U templates, 9-S type high-precision sensors, 10- simulation eyeglasses, the upper spherical plates of 11-, 12- lower peripheral surface plates.
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
The invention provides a kind of accurate thread trim ring to connect moment of torsion-pretightning force mapping relations measurement apparatus, realizes this hair
Bright technical scheme is as follows：
As shown in accompanying drawing 1,2, a kind of measurement apparatus of accurate thread trim ring connection moment of torsion-tensile relationship includes：Torsion is surveyed
Amount instrument, threaded ring tighten special spanner, S types high-precision sensor 9, simulation eyeglass 10, replaceable threaded ring nut assembly,
Sphere-contact connection component, linear limit assembly, base 5；
Threaded ring, which is connected with, on torsion measuring instrument tightens special spanner；
The lower end of S types high-precision sensor 9 is fixedly connected with base 5, and the upper end of S types high-precision sensor 9 connects with sphere-contact
The U-shaped board 8 of connected components is fixedly connected；
Sphere-contact connection component is as shown in figure 3, including upper spherical plate 11, lower peripheral surface plate 12 and U-shaped board 8；U-shaped board 8
It is fixedly connected with S types high-precision sensor 9；Lower peripheral surface plate 12 is fixedly connected with U-shaped board 8；The sphere of upper spherical plate 11 and lower ball
The sphere-contact of panel 12, its act on be ensure measurement pretightning force it is uniform and vertical act on S types high-precision sensor 9
On；The upper upper end of spherical plate 11 connection simulation eyeglass 10.
Simulation eyeglass 10 is connected with the upper spherical plate 11 of sphere-contact connection component；
Linear limit assembly includes optical axis 3, rhombus shaft stool 4, box linear bearing 2；Totally four, optical axis 3, passes through four
Individual rhombus shaft stool 4 is fixed on base 5；Box linear bearing 2 passes through optical axis 3, the U-shaped board 8 with sphere-contact connection component
It is fixedly connected；During work, the effect of linear limit assembly is that the connection component rotation of limitation sphere-contact prevents from transmitting moment of torsion
To S types high-precision sensor 9, to eliminate because sphere-contact connection component reverses the shadow to the measurement accuracy of S types high-precision sensor 9
Ring；
Replaceable threaded ring nut assembly includes supporting plate 1 and threaded ring nut 7, and it is that can change every time that it, which is acted on,
Threaded ring nut 7 used in experiment；The optical axis 3 of replaceable threaded ring nut assembly and linear limit assembly, which is fixed, to be connected
Connect；
The moment of torsion of accurate thread trim ring-pretightning force mapping relations measuring method step is following (with diameter 50mm screw thread pressure
Exemplified by circle and threaded ring nut)：
1st step：Threaded ring, threaded ring nut, the material for simulating eyeglass are determined, and respectively processes 50 as experiment
Part.
2nd step：50 threaded rings, threaded ring nut, simulation eyeglass are numbered and be grouped respectively.It is divided into 5
Group (ai~ei), each group has 10 threaded rings, threaded ring nut, simulation eyeglass, numbering xi(x be a~e letter, i
Positive integer for 1~10).
3rd step：Determine lubricating condition, environment temperature, ambient humidity, tighten speed, design pretightning force or prefastening torque, so
Carry out threaded ring afterwards and tighten experiment, and make using Dongfa Inst. of Vibration ＆ Noise Technology DASP softwares and match
Hardware carries out data acquisition, obtains the S types high accuracy when the pretightning force or prefastening torque of threaded ring reach design requirement value
The performance graph of sensor and torque force testing instrument.
4th step：Data corresponding to handling performance graph, calculate torque coefficient k under the experiment conditionaiAnd remove this group of moment of torsion
Minimum and maximum singular value in coefficient.
OrderWhereinFor under a group experiment conditions, the torque coefficient of threaded ring
Average value.
5th step：The mathematical modeling of threaded ring pretightning force-moment of torsion mapping relations under a group experiment conditions is established, i.e.,Wherein d is the nominal diameter of threaded ring under a group experiment conditions, and F is pretightning force.
6th step：Other group experiments are analogized according to experiment condition.
To sum up, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements made etc., the protection of the present invention should be included in
Within the scope of.
Claims (4)
- A kind of 1. measurement apparatus of accurate thread trim ring moment of torsion-pretightning force relation, it is characterised in that including：Torsion measuring instrument, S It is type high-precision sensor (9), simulation eyeglass (10), replaceable threaded ring nut assembly, sphere-contact connection component, linear Limit assembly, base (5) and threaded ring (6)；S types high-precision sensor (9) lower end is fixed on the base (5), upper end and sphere-contact connection component lower end It is fixedly connected；The sphere-contact connection component upper end is provided with spherical plate, and the spherical plate is connected with the simulation eyeglass (10)；The ball Face contact connection component is used for the pretightning force that limitation is applied on the simulation eyeglass (10), the pretightning force is acted perpendicularly to institute State S types high-precision sensor (9)；The linear limit assembly is fixedly connected on base (5), and linear limit assembly is connected by bearing and sphere-contact Connected components are fixedly connected, and the linear limit assembly is used for the rotation for limiting sphere-contact connection component；The replaceable threaded ring nut assembly coordinates with the linear limit assembly to be fixed, for by the threaded ring (6) it is fixed on above the simulation eyeglass (10).
- A kind of 2. measurement apparatus of accurate thread trim ring moment of torsion-pretightning force relation as claimed in claim 1, it is characterised in that The sphere-contact connection component includes upper spherical plate (11), lower peripheral surface plate (12) and U-shaped board (8)；The bottom of the U-shaped board (8) is fixedly connected with S types high-precision sensor (9)；The lower peripheral surface plate (12) is the flat board that upper surface opens up spherical groove, and lower peripheral surface plate (12) is fixed on the U-shaped board (8) Upper end；The upper spherical plate (11) is the flat board that lower surface is provided with spherical surface hill, spherical surface hill and lower ball on upper spherical plate (11) Spherical groove on panel (12) matches and contacts connection；Upper spherical plate (11) the upper end connection simulation eyeglass (10).
- A kind of 3. measurement apparatus of accurate thread trim ring moment of torsion-pretightning force relation as claimed in claim 2, it is characterised in that The linear limit assembly includes optical axis (3), rhombus shaft stool (4) and box linear bearing (2)；The optical axis (3) totally four, is fixed on base (5) by four rhombus shaft stools (4), wherein four optical axises (3) set around the sphere-contact connection component；The box linear bearing (2) totally four, each box linear bearing (2) pass through an optical axis (3), four box straight lines Bearing (2) is fixedly connected with the U-shaped board (8) of sphere-contact connection component.
- A kind of 4. measurement apparatus of accurate thread trim ring moment of torsion-pretightning force relation as claimed in claim 3, it is characterised in that The replaceable threaded ring nut assembly includes supporting plate (1) and threaded ring nut (7),The supporting plate (1) is fixed on the optical axis of the linear limit assembly, and the threaded ring (6) passes through the screw thread Trim ring nut (7) is fixed in the supporting plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610797982.0A CN107702836B (en) | 2016-08-31 | 2016-08-31 | Precise thread clamping ring torque-pretightening force mapping relation measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610797982.0A CN107702836B (en) | 2016-08-31 | 2016-08-31 | Precise thread clamping ring torque-pretightening force mapping relation measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN107702836A true CN107702836A (en) | 2018-02-16 |
| CN107702836B CN107702836B (en) | 2020-07-28 |
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|---|---|---|---|
| CN201610797982.0A Active CN107702836B (en) | 2016-08-31 | 2016-08-31 | Precise thread clamping ring torque-pretightening force mapping relation measuring device |
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| CN112014023A (en) * | 2020-08-31 | 2020-12-01 | 湖北文理学院 | Hub bolt torque detection device |
| CN112665834A (en) * | 2021-01-07 | 2021-04-16 | 北京理工大学 | Radial loading device and loading method for stress test of optical lens |
| CN115182916A (en) * | 2022-07-06 | 2022-10-14 | 西安中科飞图光电科技有限公司 | Automatic fastening device and method for optical lens pressing ring |
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